Improvement in elbow-machines



CHARLES H. AMAN'N, OF COLUMBUS, OHIO.

IMPROVEMENT lN ELBOW-MACHINES.

Specification forming part of Letters Patent No. I 78,705, dated June13, 1876; application filed April 8, 1576.

To all whom it may concern: e

Be it known that 1, CHARLES H. AMANN, of Columbus, inthe county ofFranklin and State of Ohio, have invented anew and valuable Improvementin Beadiiig-lllachines and I do hereby declare that the following is afull, clear, and exact-description of the construction and operation ofthe same, reference being had to the annexed drawings, making a part ofthis specification, and to the letters and figures of reference markedthereon.-

Figure 1 of the drawings is a representation of an end view of myimproved pipe-jointing machine. Fig. 2 is a detail view of a part of thesame, and Fig. 3 is a longitudinal vertical section of the same.

This invention relates to improvements in machines for the manufactureof pipe-elbows of curved form; and it consists in the combination of ananvil cone-wheel, composed of two parts of different diameters, theouter and smaller part being right cylindrical, and the inner and largerpart in the form of a conical frustum, and of a similar pressure orhammer wheel, the outer and larger part of which is right cylindrical,and the inner and smaller part a conical frustum, the said wheels beingapplied upon rotating shafts, the one above the other, with theirrectilinear and beveled surfaces in contact, whereby a section of pipepassed in between these wheels will have a bead formed onv its edgeadapted to receive a lip upoua second section. It also consists in adisk or stop rotating withthe anvil cone-wheel, and extending beyond thebeveled periphery of the anvil or pressure wheel, whereby a means isprovided for forming the bead equidistant at all points from the edge ofthe pipe-section. It also consistsin making the anvil-wheel adjustable,and in combining with it a pressure-cam, an operatin g-lever for thecam, and an actuating-treadle, whereby the necessary pressure forforming the head is obtained, as will be hereinafter more fully setforth and claimed.

in the annexed drawings, the letter A designates the shaft of theanvil-wheel B, and A that of the hammer-wheel B, arranged the one abovethe other, and actuated to rotate in opposite directions by means ofintermeshing gears a a and a suitable crank-arm or a pulparts, the onewith the other.

ley-wheel. ings in a frame, 0, in the customary manner, while shaft A isadjustable and vvertically vibratory in the following manner, to wit:One of its ends is mounted loosely in-a bearing-block, Z), confined bymeans of a screw or screws, 0, in a slot, (1, formedin one of theuprights of the frame; and it extends through a cross-piece, h, and isprovided with an arm 7 or lever, F, connected by means of a rod, 1, to

a treadle, G. When this treadle is depressed the sash will be loweredand the ham merwheel B forced into violent contact with the anvilwheelB. If the treadle be released from pressure, wheel B will be raised upfrom wheel B by the recoil of a suitable spring, S, arranged betweenlever F and cross-piece h, which spring had been compressed or actuatedby the operation of the treadle. Wheels B B are removably applied upontheir respective shafts and are of the following construction: Wheel Bis composed of two parts, i 71, of different diameters, the latter beingthe great- Part i is right cylindrical, its periphery being parallel tothe axis of shaft A, and part i (the larger) is in lhe'form of a conicalfrustum, its base or larger diameter being next to part i, and itsbeveled periphery forming an acute angle with the shaft. Wheel B islikewise composed of two parts, jj, of different diameters, the larger,j, being right cylindrical, and the smaller a conical frustum, arranged,the former outside and the latter inside, so that the right-eylindricalparts will be in the same plane, and also the beveled will be of anysuitable metal, and the anvil will be provided with a gage or stop, m,of greater diameter than wheel A, and preferably cast with and forming acomponent part I I thereof.

The operation of my machine-is as follows: The edge of the pipescctionispassed between wheels B B and pressed against stop m. The

raj irracri Shaft A is arranged in fixed bear- The wheels treadle isthen operated, bringing the latter down forcibly upon the former, andbending or swaging the edge of the pipe into the form of a bead,%, oneof the edges, 1, of which will be at right angles to the axis of thepipe, and the other, 2, at an acute angle to the wall 1. The wheels B Bbeing set in motion, this head will be formed all around the edge of thesection. A flange, 0, will then be formed by an ordinary tinnersturning-machine around the edge of a second section, and will be passedunder flange 2 of head a into the latter. Wheels B B will then beremoved, and a wheel, I, having a slightly-rounded periphery,substituted for the former, and a wheel, 1', having a deep peripheralgroove, 19, and beveled edges 1), for the latter. The united sectionswill be then passed between wheels I 1, and the latter brought downthrough the medium of a treadle and its connections upon the former,when flange 2 of head a will be bent down and over flange 0, and,byimparting rotary motion to the said wheels, clamp the two sectionsclosely together. These sections being short, and having tapering edges1", a symmetrical rounded elbow, H, may be made, by the jointing ofsuccessive sect-ions together, admirably adapted for stove-pipes,hot-air conduits for furnaces, and for other analogous purposes.

hat I claim as new, and desire to secure by Letters Patent, is-

1. The anvil'wheel B, consisting of an exterior right-cylindrical part,t, and an inner part, 2', of the form of a conical frustum, with itslarger base next the part i, and of larger diameter than the same, incombination with the hammer-wheel B, consisting of an outerrightcylindrical part, j, and an inner conical part, j, of lessdiameter, and forming a'reentrant angle with part j, substantially asspecified.

2. In a pipe-jointing machine, the combination, with the shafts A A andwheel B, having the exterior right-cylindrical portion j, the conicalportion j, and the re-entering angle between, of the anvil-wheel B,having the exterior cylinder 73, the salient part 13, and thestop-flange m, arranged in contact with the inner face of the wheel B,and adapted to form a head on a pipe-edge with an oblique flange, 2,substantially as specified.

3. The combination, with an anvil-wheel applied upon a shaft rotating infixed bearin gs, and a hannner-wheel on a shaft having movable bearings,ot' a pressure-cam, a lever, and a treadle for applying the pressure,substantially as specified. i

4. The shaft loosely applied in its hearing at one end, and suspended ina verticallymovable sash at the other, a connectingrod, a ro'clrcam, andan actuating-treadle, combined and arranged substantially as specified.

5. The spring S, in combination with acam, a lever, and avertically-vibratin g shaft, A, having hammer-wheel B, and a shaft, A,having anvil-wheel B, substantially as specified.

In testimony that I claim the above I have heieunto subscribed my namein the presence of two witnesses.

CHARLES H. AMANN. Witnesses:

L. A. HARKER, WM. F. MEARRO.

